A quantum random number generator certified by value indefiniteness [PDF]
Mathematical Structures in Computer Science, 2014 In this paper we propose a quantum random number generator (QRNG) that uses an entangled photon pair in a Bell singlet state and is certified explicitly by value indefiniteness. While ‘true randomness’ is a mathematical impossibility, the certification by value indefiniteness ensures that the quantum random bits are incomputable in the strongest sense.
Abbott, Alastair A. +2 more
openaire +3 more sources
Stability of sodium mass fraction in agricultural certified reference materials
Talanta Open, 2022 Certified values in reference materials are considered the best estimates of true values, being used for validation and verification of analytical methods.
M.A. Bacchi +3 more
doaj +1 more source
Preparation of Reference Materials for Carbon and Nitrogen Isotopes of Organic Materials
Yankuang ceshi, 2020 OBJECTIVES The carbon and nitrogen isotope reference materials used by laboratories and researchers are generally obtained by the International Atomic Energy Agency (IAEA). However, in recent years, with the widespread use of carbon and nitrogen isotopes
LI Ke +3 more
doaj +1 more source
X-Ray fluorescence analysis of feldspars and silicate glass: effects of melting time on fused bead consistency and volatilisation [PDF]
, 2011 Reproducible preparation of lithium tetraborate fused beads for XRF analysis of glass and mineral samples is of paramount importance for analytical repeatability.
Bell, Anthony +11 more
core +5 more sources
Speciation without chromatography: Part I. Determination of tributyltin in aqueous samples by chloride generation, headspace solid-phase microextraction and inductively coupled plasma time of flight mass spectrometry [PDF]
, 2001 An analytical procedure was developed for the determination of tributyltin in aqueous samples. The relatively high volatility of the organometal halide species confers suitability for their headspace sampling from the vapour phase above natural waters or
Lam, J. +4 more
core +1 more source
Speciation without chromatography: Part 2. Determination of tributyltin by chloride generation flow injection atomic absorption spectrometry [PDF]
, 2002 A procedure is described for the quantitation of tributyltin in aqueous samples and extracts based on its relatively high volatility in halide media, permitting vapour phase sampling from the headspace above such samples.Tributyltin chloride (TBT-C1) was
Christine Scriver +13 more
core +1 more source
Preparation of Phosphate Ore Reference Materials for Chemical Composition Analysis
Yankuang ceshi, 2017 For the development and comprehensive utilization of phosphate ore it is not only necessary to analyze the main elements such as phosphorus, but it is also necessary to determine accurately the rare earth, trace and other elements.
ZENG Mei-yun +3 more
doaj +1 more source
Preparation of High-phosphorus Iron Ore Reference Materials for Chemical Composition Analysis
Yankuang ceshi, 2019 BACKGROUND The analysis and testing process of high-phosphorus iron ore requires quality control of standard materials with similar matrix components, moderate content and fixed value components.
ZENG Mei-yun +3 more
doaj +1 more source
Preparation of Trace Gold and Gold Ore Reference Materials
Yankuang ceshi, 2021 BACKGROUND From 1986 to 2007, different grades of trace gold certified reference materials (background grade, anomaly grade, medium grade and high grade) and mineral gold certified reference materials (mineralization grade, cutoff grade and concentrate ...
YANG Rong +3 more
doaj +1 more source
Certification of a Master Batch of Charpy V-Notch Reference Test Pieces of Nominal Energy Level 30 J for Tests at 0°C, Certified Reference Material ERM®-FA013ay [PDF]
, 2011 This certification report describes ERM®-FA013ay, a batch of steel Charpy V-notch certified reference test pieces for tests at 0 ºC. This batch will serve as a Master Batch, to be used by IRMM for the certification of secondary batches.
DEAN Alan +2 more
core +1 more source